Coal jig



Apr. 10,;1'923.

G. w. WILMOT ET AL COAL JIG Filed Sept 26; 1922 2 sheets-sheet ATTORNEY.

Apr. 10, 1923. 1 1,451,287

G. W. WILMOT ET AL COAL JIG Filed Sept 26, 1922 2 sheets-sheet 2 INVENTORS,

ATTORNEY.

Patented Apr. 10, 1923.

ime? OFFICE.

GEORGE W. WILMOT AND FRANCIS H. BLATCI-I, OF. HAZLETON, IPENNSYLVANIA,

ASSIGNORS 10 WILIVEOT ENGINEERING COMPANY, OF HAZLETON, PENNSYL'' Y VANIA, A CORPORATION OF PENNSYLVANIA.

COAL JIG.

Application filed September26, 1922. Serial No. 590,593.

To all whom it may concern.

Be it known that we, GEORGE WILMOT and FRANCIS HLBLATCI-I, citizens of the United States, and residents of Hazleton, in the county of Luzerne and State of Pennsylvania, have invented an Improvement in Goal Jigs, of which the following is a specification.

Our invention relates to apparatus designed primarily for washing coal but which may be employed also for washing ores of various kinds.

The general object of the invention is to provide an apparatus embodying novel 'means by which it is particularly adapted for use in the washing or jigging of the smaller commercial sizes of coal, and a still further object is to. provide a novel construction of means whereby the apparatus shall be,-as far as is possible practical selfcleaning.

A further object of the invention is to provide means whereby the direction of the flow of water upwardly through the pan may be controlled to thereby render the operation of the apparatus more eflicient than heretofore has been the case.

To these and other ends our invention comprehends the construction and arrangement of parts as hereinafter described in detail, particularly pointed out. in the claims, and as illustrated in the drawings in which we have illustrated one form of embodiment of jig structure embodying our invention. However, it will be understood that our invention is susceptible of embodiment in other forms of construction than that shown and that changes in the details thereof may be made withinthe scope of the claims without departing from the said invention.

in the drawings:

Fig. 1 is a central vertical sectional view of a portion of a coal jig apparatus em bodying our invention;

Fig. 2 is a horizontal sectional view of a portion of the apparatus showing a portion of the valve structure in top plan;

Fig. 3 is a transversesectional view takenon the line 3-3 of Fig. 2;

Fig, 4 is a transverse vertical sectional view taken on the line 4-4 of Fig 1;

' Fig. 5. is a view taken. on the line 55 of Fig. l; and

F ig. 6 is a view similar to that shown in Fig. 2) showing a slightly modified means for retaining the tubular valves in co-op erative relation with respect to the seats therefor.

Reterring to the drawings l designates a tank for holding water having a valve controlled outlet at 2 of known construction and operating in known manner. The coal or other material tobe washed is introduced into the jig pan 3 at the point 4 and its passage from its point of introduction toward the rear or discharge end of the jig pan is controlled to a greater'or less extent by the adjustable plate 5. The bottom 6 of the jig pan is perforated in known manner. The jig pan supported upon the sides of the tank 1 in known manner.

The tankl is filled with waterto such an extent that the top level thereof occupies a plane a short distance below'the upper edges of the opposite sides of the jig pan 3, and in order that the same may be agitated and a current caused to fiow upwardly through the jig pan and over the'upperedge of the discharge end thereof a plunger ,is provided having a Valve-structure which operates to cause upward flow of the Water through the said jig pan. The said plunger comprises a frame designated as-a whole by the reference numeral 8 which frame is provided with hearing portions 9 which are adapted to bear against the inside surfaces of the walls of the casing 10 within which the Q plunger is situated and within which itop crates. The saidcasing is secured to and depends fromthe bottom ofthe pan The rear end portion of the plunger is situated underneath the rear or discharge end portion of the jig pan while the opposite or front'end portion or side of the said plunger terminates a distance inwardly oi" the front end portion of the said jigpan. In. order, however, that the water may be permitted to flow through the perforations in the bottom of the jig pan at thetront end portion of the latter underneath the point of delivery thereto of the coal or ore to be washed we have extended the front-in all of.

at their upper ends by means of a bolt 15 to the inner end of a lever 16 pivoted intermediate its ends at 17 upon a standard or bracket 18 which projects upwardly from a cross-bar 19 supported at its opposite ends upon the top sills oil the tank structure. Tnorder that the lever 16 may be held in position as shown in Fig. 1 with the door or gate 12 closed we have provided the upright rod or bar 20 which terminates at its upper end in a hook 21 with which the outer end of the said lever 16 is adapted to be engaged and disengaged for the purpose of holding the said gate in closed position and for the purpose of permitting the same to open.

In the construction as shown the plunger comprises a couple of members 25 and 26 which are adapted tobe placed in edge to edge contact relationlwith respect to each other, as shown, and the opposite ends of which are adapted to be secured to the frame structure 8 of the plunger. These members 25 and 26 are provided with parallel slots 29, as indicated, and the bars 30 separating the said slots have tapering upper and lower edges, as indicated at 31 and 32, so that in cross-section the said bars (ex cept those at the opposite sides of each of the members 25 and 26) may be described generally as being of diamond-shape The valves 33 for controlling the passage of vwater through the openings provided by the slots 29 are tubular and are adapted to be seated upon or against the adjacent opposing surfaces 31 of adjacent bars upon opposite sides of the respective slots. it

will be noted, as already indicated, that the bars 30 at the opposite sides of the members 25 and 26 are triangular in cross-section and not quadrilateral as is the case with the intermediate bars 30; and also that the said bars 30 at the inner edges or sides of the members'25 and 26 which are in contact with each other combine to produce a divisional bar which in cross-section is of diamond-shape, as shown in Fig. 3.

The opposite ends of the tubes 33 may be closed and in order that the weight of the said tubes may be varied material, such as liquid or agranulated solid material, may be inserted into the said tubes. By varying the weights of the tubes their sensitiveness to the action of the water thereon during the reciprocating movements of the plunger, to be hereinafter described, may be varied and controlled. For the purpose of retaining the tubes 33 in co-operative relation to their respective seats we have provided retaining bars 38 which extend across the members 25 and 26 and are secured tov projections 40 atthe outer edges thereof. For thepurpose of protecting the valve structureiuet described againstfcre matter and forpr nting the from accumulating upon the said valve structure we have provided a shield or pro- .tector situated a distance below the said lower edges of the frame 8 of the plunger 1 previously referred to. The same bolts op crate also to secure to the lowerfsides of the said frame the brackets 50 at opposite sides of the frame structure to which bracket-s the lower ends of the connecting bars 51 are secured. The upper ends of the said bars are suspended from eccentrics 53 which are mounted upon a shaft 5 1 supported in bearings 55 upon the opposite,

sides of the tank frame structure. This shaft is driven in known manner. Rotation of the said shaftefl'ects reciprocation of the connecting bars 51 which in turn effects reciprocation of the plunger within the casing 10.

In the'construction as shown in Fig. 6 of the drawings the retaining bar 38 is provided with depending V-shape projections which are situated directly above the bars 30 intermediate the tubular valves 33.

Upon reciprocation of the plunger the valves are moved up and down to openand close the passageways between the bars 30. Upon descending movement of the plunger the water pressing upwardly against the valves 33 causes the same to open whereupon streams of water flow upwardly through the openings 29 between the said bars 30. Upon lifting movement of the plunger the valves close so as to force the water which previously flowed upwardly through the openings 29 upwardly through the perforations in the bottom 6 of and thence on upwardly so as to cause an overflow of the water at the the jig pan 3 discharge end of the pan to effect forward movement of the coal and the slate and other relatively heavy material which may have been separated out, from the coal.

The coal being the lighter is discharged The purpose of providing the bars 30 with tapering surfaces 31 and see, that the valve structure shall, as far as possible, be s cleaning. By the employment of bars of the loo character illustrated as valve seats it will be apparent that the tendency will be to prevent the lodgment of any foreign substance upon the outer surfaces thereof which would interfere with the proper operation of the valves For this reason we have referredto the valve structure; as being a self-cleaning or self-clearing structure. This provision taken in connection with the shield or protector is sufficient to keep the valve structure in a relatively clean condition whereby the efliciency of the apparatus is substantially enhanced. Also by reason of the presence of the gate or door 12 the center of the casing 10 and the lower side of the bottom 6 of the jig pan may be readily cleansed. By opening the said door or gate the water may be caused to flow rapidly downwardly through the opening thus produced so as to sweep or wash from the inside surfaces of the said casing and from the bottom surface of the bottom 6 any material which may have collected on such surfaces and which might interfere with the efficient operation of the apparatus.

In order to control to a greater or less degreet the flow of water through the casing 10 toward that portion of; the bottom 6 of the jig pan directly underneath the point of delivery to the jig pan of the coal or other material to be washed we have provided the adj ustable plate 65. which extends transversely of theapparatus and which is situated at a point above the forward edge portion of the plunger previously described. The plate is pivotally supported at its opposite ends in the sides of the casing and for the purpose) of adjusting the same is provided with an arm 66 which extends laterally therefrom and to the outer end of which the inner end of an operating rod or bar 67 is connected. The outer end of said bar is situated in a position to be readily accessible for operation. Adjacent its outer end the operating 3 bar 67 is provided with notches 70 which are adapted to engage the upper edge of a catch plate 71 supported upon atop sill of the tank frame structure. By adjusting the plate, 65 to different positions the amount of water permitted to flow towardthe left, having reference to Fig. 1 of the drawings, from the plunger so as to pass through perforations in the front portion of the bottom 6 of-the In like manner and for the purpose of being able to increase the amount of water caused to flow toward the right from the said plunger and upwardly through the perforations of the bottom of the jig pan near the dis-v charge end thereof, particularly at the point where the slate is discharged, we have provided an adjustable transversely extending plate 73' pivoted at its opposite ends upon the casing lO'and provided adjacent one end with an arm 74: to the upper outer end of which the inner end of an operating rod or bar 75 is secured. The outer upper end of the said rod or bar is situated in a position to be easily accessible for operation, and the lower side of the upper'edge portion thereof is provided with notches 7 6 atintervals which are adapted to engage with the upper edge of a catch plate 77 which is secured to one of the top side sills ofthe tank frame structure. By operating the rod or bar 75 the plate 73 maybe angularly-adjusted about its axis so as to control the direction of the flow of a portion of the water which passes through the valve structure of the said plunger. When the plate 73 is in the position as shown a considerable; portion of the water, almost half, which passes upwardlythrough the said plunger will be caused to flow toward the right, having reference to F ig. l of the drawings, and to enter the jig tank 3 at a point adjacent the point of discharge; of

the slate or other relatively heavy material therefrom. As will be apparent the plate 73 may be adjusted sov as to occupy a position parallel with the planeof the plunger and that when in such position the water flowing upwardly through the plunger opposite the said plate will be deflected equally in opposite directions, toward the front and the rear of the jig pan. If the plate be adjusted so that it is inclined in a direction opposite to that in'which it isshown in Fig. l of the drawings it. will be apparent that the water flowing through the plunger and which strikes against the said plate would be deflected toward the left insteadof toward the right, as is the case at present.

It will be seen that we have provided an apparatus of unitary construction and design which. is provided with means whereby thevalves of the plunger for effecting the flow of water through the jig pan are selfcleaning, and also with means whereby the 1 said valve also be seen that we have provided means structure is protected. It will whereby the direction of the flow of water from the passageways throughthe reciprocating plunger may be controlled and varied as may be desired and also that we have provided meanswhereby the bottom surface of the bottom of the jig pan and the surface of the inclosing casing which depends from the 1 bottom of the. thoroughly closed;

Having thus described our invention What we claim and desire to secure by Letters Patent is: I

1. AQ coal or ore washing machine com,-v

prising a reciprocating plunger for causing aflow of water upwardly through the coal jig pan may be readily and or ore to be washed,-the s'aid plunger ineluding a plurality of bars, arranged. in

spaced. parallel relation to each other, the

upper and lower edges of which bars are wedge-shaped, and tubular valves situated between the opposing tapered sides of the upper edges of adjacent bars, substantially as described.

' QQA coal or ore washing machine comprising a reciprocating plunger for causing a flow of water upivardly through the coal or ore to be washed, the said plunger in eluding a plurality of spaced parallel bars, the spaces between the said bars constituting openings through which the water flows upwardly through the said plunger, the upper portions of said bars being tapered so that, in cross-section the upper edge is of wedge-shape. and tubular valves situated between the adjacent sides of the wedge-shape portions of adjacent bars, substantially as described. A

3. In a coal the combination of a jig pan, a casing projecting doi'vnwardly from the said jig-pan and forming a chamber underneath the bottom thereof, a plunger situated within the'said casing, means for effecting reciprocation of said plunger, a valve structure carried by said plunger for permittin'g'an upward flow of water therethrough and preventing a downward flow, and means intermediate the said plunger and the bottom of the said ig pan whereby the direction of the flow of portions ofthe water after it passes through the said plunger may be directed and controlled.

In a coal jig, the combination of a pan having a perforated bottom, a casing supported underneath the said pan and providing a chamber underneath the bottom thereof, a plunger situated within the said casing, means for'causing' reciprocation of said plunger which plunger is provided with means foifcausing flow of water upwardly through the said jig pan, adjustable plates situated intermediate the plunger and the bottom of the said jig pan adjacent the front and rear end. portions. of the said plunger, and means for adjusting the said plates whereljiy the direction of the flow of portions of the water which may flow upwardly through the sa plunger may be controlled.

In a. coal jig, the combination of a stationary jig pan having a perforated bottom,

a casing depending from the said pan having vertical side, and rear walls and the lower portion of the front wall of which is vertical while the upper portion thereof is inclined toward. the front of the machine and comprises a hinged section constituting a gate, means whereby the said gate may be opened and closed, and means for effecting reciprocation of the said plunger to effect flow of water upward-1y through said jig pan and'forwardly and out of the space between the said plunger and the said through. the said gate controlled opening when "the latter isopened, substantially as described.

portion which constitutes a gate for opening and closing an opening leadingfrom the said chamber, means fo'r opening and closing the said gate, a plungersituated inthe lower portion of said casing the said plunger including a valve structure which is adapted to operate to cause an upward flow of Water through the plunger structure, and adjustable means within the space between the plunger and the bottom of the said jig pan whereby the direction of the fiow. of water after it passes through the valve structure of the said plunger and enters the said space may be directed and controlled. j

7. In a coal jig, the combination of a pan, a casing situated underneath the, same and providing a chamber underneath the bottom of said pan, a plunger. situated and operating within thelower'portion of the said casing, said plunger'including a valve structure for controlling the flow of water upwardly therethrough, plates pivotally supported within the space between the said plunger and the bottom of the said jig pan, the said plates extending transversely and parallel with the bottom of said ig pan, and manually operable means for effecting adjustment of the said plate, substantially as described.

S. In a coal jig, the combination of a jig pan, a reciprocating plunger having a valve structure which is adapted to cause a flow of water through thesaid jig pan, and a shield having connection with the said plunger and. situated underneath the said valve structure for protecting and shielding the latter against foreign matter to thereby prevent interference with or interruption of the efficient operation of the said. valve structure.

9. In a coal the combination of a jig pan, a plunger having a valve structure which is adapted to permit a flow ofwater upwardly through the said plunger and to cause forward flowing movement thereof through the said pan, means for efi'ecting reciprocation ofthe said plunger, and j a screen plate carried by the said plunger and situated underneath the saidvalve structure.

In testimony that we claim the foregoing as our invention we have hereunto signed our names this 22nd day of September, A. D., 1922.

anon-GE. WILLMOT. FRAME" H. ,EBLATGHE.

depending from the said jig panv 

